linux-kernel - Re: [PATCH v2] ipmi/watchdog: add missing newlines when printing parameters by sysfs

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Message-ID: <20200721113149.GH2952@minyard.net>
Date:   Tue, 21 Jul 2020 06:31:49 -0500
From:   Corey Minyard <minyard@....org>
To:     Xiongfeng Wang <wangxiongfeng2@...wei.com>
Cc:     arnd@...db.de, gregkh@...uxfoundation.org,
        openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, guohanjun@...wei.com, joe@...ches.com
Subject: Re: [PATCH v2] ipmi/watchdog: add missing newlines when printing
 parameters by sysfs

On Tue, Jul 21, 2020 at 02:35:09PM +0800, Xiongfeng Wang wrote:
> When I cat some ipmi_watchdog parameters by sysfs, it displays as
> follows. It's better to add a newline for easy reading.
> 
> root@(none):/# cat /sys/module/ipmi_watchdog/parameters/action
> resetroot@(none):/# cat /sys/module/ipmi_watchdog/parameters/preaction
> pre_noneroot@(none):/# cat /sys/module/ipmi_watchdog/parameters/preop
> preop_noneroot@(none):/#
> 
> Signed-off-by: Xiongfeng Wang <wangxiongfeng2@...wei.com>

Thanks, included in my queue for next release.

-corey

> ---
>  drivers/char/ipmi/ipmi_watchdog.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
> index 55986e1..f78156d 100644
> --- a/drivers/char/ipmi/ipmi_watchdog.c
> +++ b/drivers/char/ipmi/ipmi_watchdog.c
> @@ -232,12 +232,17 @@ static int set_param_str(const char *val, const struct kernel_param *kp)
>  static int get_param_str(char *buffer, const struct kernel_param *kp)
>  {
>  	action_fn fn = (action_fn) kp->arg;
> -	int       rv;
> +	int rv, len;
>  
>  	rv = fn(NULL, buffer);
>  	if (rv)
>  		return rv;
> -	return strlen(buffer);
> +
> +	len = strlen(buffer);
> +	buffer[len++] = '\n';
> +	buffer[len] = 0;
> +
> +	return len;
>  }
>  
>  
> -- 
> 1.7.12.4
>